Machine for shearing



(No Model) W. A LMER.

MACHINE EOR SHE-ARING PUNCHI'NG, AND RIVETING.

No. 257,059. Patented Apr. 2 1882.

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taken on line y 1 of Fig. 1. I Fig. at is a hori UNITED STATES ATENTFFiCE.

WILLIAM A. PALMER, 0F ROME, GEORGIA.

SPECIFICATION forming part of Letters Patent No. 257,059, dated April25, 1882.

Application filed September 29, 1881. (No model.)

To all whom it may concern:

Be it known that I, WM. A. PALMER, a citizen of the United States,resident at Rome, in the county of Floyd and State of Georgia,

.have invented a new and valuable Improvement in Punching and RivetingMachines; and 1 do hereby declare that the following is a full, clear,and exact description of the construction and operation of the same,reference being had to the annexed drawings, making a part of thisspecification, and to the letters and figures of reference markedthereon.

Figure 1 of the drawings is a representation of a side elevation of myinvention. Fig.2is Fig, 3 is a horizontal section zontal section takenon line mm of Fig. 1. Fig. 5 is a longitudinal section of thelever-casting, and Fig. 6 is a part sectional view of the treadle.

This invention has relation to punching and riveting machines; and itconsists in the novel construction and arrangement, in connection withthe supporting-frame and bed-plate, of the pivoted punch-guide andoperating-lever, the riveting-hammer and retractin g-sprin g, theoscillating lever carrying the goose-bill clamp at its upper end and theretracting-springs working in opposite directions near its lower end,the shouldered guide for stopping the lever, thepunch'plate andadjustable guide for adapting the machine to different widths ofstrap-iron, the knife for cutting the riveted straps into lengths, andthe oscillating treadle for operating the punch and knife, as will behereinafter fully described, and particularly pointed out in the claims.

The object of the invention is to produce a machine for rapidly andconveniently punching and riveting sections of strap-iron together toform bale-ties, barrel-hoops, and the like, and I will now proceed todescribe its construction and operation with reference'to theaccompanying drawings, in which like letters of reference refer tocorresponding parts of the machine.

The anvil A, having lugs 0, forms a bedplate to which the casting B isbolted. It is supported on legs D and E, at a convenient height from thefloor to enable the operator at the front of the machine to manipulatethe straps and rivets. Castings E and E one being slightly-longer thanthe other, are bolted to the front face of the casting B, as shown,

and form boxes E in which the fulcrum E of the lever-casting F isjournaled. The casting B is provided with a vcrticalrcctangular opening,G, in the offset portion G of the same. Below the offset portion aslotted guide-plate, G is bolted, the slot G of the same registeringwiththe opening Gin the casting B. The lever-casting F is bifurcatedvertically at its forward end, at H, and is provided with a verticalrectangular opening, H, slightly in the rear of this bifurcation, andhas a perforated arm, H for attaching the ra-bbeted end of a woodenlever, H as shown.

A vertical bar, I, is pivoted in the vertical slot H, passes downthrough the opening G in the casting B, and also through the slot G inthe guide-plate G is rabbeted at its lower end, and has a punch, 1pivoted thereto. A punch-guide, 1 is bolted to the face of the castingB, its base being slightly elevated above the face of the bed-plate A.

Beneath the punch-guide l and'secured to the anvil or bed-plate A, is apunch-plate, I, of steel, the hole a for the punch I having acutting-edge. A vertical bar, J, of steel, passes along a recess, J, inthe right face, from the front of the machine down through the opening Gin the casting B, through the slot G3 in the guide-plate G and isprovided with a ham mer-head, J, at its lower end, which is held by aspiral retracting-spring, K, one end of which is secured to an arm orpin, K, projecting from a bolt-head, K at the front of the casting B,and the other end to apin, L, projecting from the right side of thevertical bar J.

A recess, M, is made vertically in the righthand face of the anvil orbed-plate A, and a lateral guide, N, having a shoulder, N, near itsinner end and an arm, N, for securing it to the frame or support of thebed-plate, is projected into the recess M, and also extendslaterallytherefrom, as shown. Down through this lateral guide N an arm or bar, 0,is passed and is sustained in place in the recess M by spiralretracting-sprin gs 0 0 the first being near the bottom and connected tothe,

2 esaose leg, E. The upper end of the bar 0 is provided with agoose-bill clamp, P, the upper jaw, P, of which is stationary and thelower jaw shouldered, the stud or tenon P being perforated at P passedthrough slot Q, and secured by a spiral spring, Q, to the rear face ofthe arm or bar 0.

An adjustable guide or gage, R, is passed from the front through anopening, R, in the casting B, and is secured to the face of the anvil bya thumb-screw, R as shown, and is intended for gaging straps ofdifferent widths, in order that they may be rapidly placed beneath thepunch with the middle of the strap beneath the punch.

The lower end of the castings E and E project horizontally toward thefront of the machine and have threaded holes for the reception of thebolts by which the portion S of the knife, which is slotted at S torender it adjustable, is secured to the under face of the eastingE, anda laterally-adjustable stop, S is secured to the under face of thecasting E as shown, against the vertical face of which the cutter Tbears in its descent.

An arm, T, is pivoted at its upper end in the bifurcated end ofthelever-castingF, is curved, as shown, to permit it to swing backbetween the castings E and E, and is provided at its lower end with anangular steel cutter, T, which, in conjunction with the adjustable plateor portion Sof the knife or shears, serves to out the straps when it isnecessary to shorten the riveted straps.

A guide-plate, U, for the vertical bar J is secured to the tops of thecastings B and E by one of the bolts employed to connect saidlastmentioned castings. When the punch is in sorted into the opening (Ithrough the punchguide Babbitt metal is filled in to close the spacearound the punch and render its action certain and precise in itsdescent upon the material to be punched. A groove, V, is made in therear face of the casting B, near its upper end, to permit the properintroduction of the pin V, on which the vertical bar I is supported.

An obtuse angled rocking trcadle, W, has its shaft XV journaled inhearings in supports W adapted to be secured to thefloor bymeans ofscrews in the ordinary manner. Spiral re-' tracting-springs X and X aresuspended from the rocking treadle W, on opposite sides of the shaft Wand near opposite edges of the rocking treadle, as shown, and studsY'and Y projcct inwardly from the supports W for engagement with thelower eyes of the pendent springs X and X respectively, when it isdesired to employ said springs to lessen the jar to the operator on therocking treadle V. Blocks Z and Z, provided with cushions or balls Z areplaced under the ends of the rocking treadle W to act as stops for thetreadle, the springs tending to render the action of the rocking treadlemore easy and uniform. A rod, Z connects the operating-lever with thetreadle, as shown. In cases where the machine is to be employed to rivetthe strap-iron into hoop form theface of the anvilshould be made convexto fit the concavity of the hoop at the riveting-point or lap at theends of the, strap. In its normal position the power end of the woodenlever H is elevated, and the end of the rocking treadle W, to'which thislever H is connected by the rod Z is also elevated. At this time thepivoted punch 1 is elevated to permit the introduction of the sectionsor ends of the straps to be punched to the goose-bill clamp P. Theoperatoron therocking treadle then throws his weight upon the elevatedincline of the same, causing the power end of the lever B to descend, bythis niovementcausing the punch to descend and punch the holes in thelapped joint'ofthe strap-iron. With the left hand-the straps beingsufficiently tightly held by the goose-bill clamp P-thevoperator at thefront of the machine, as soon as the punch has been raised from theholes, which is accomplished by rocking the treadle back to its normalposition b shifting the weight of the operator standing thereon, pushesthe straps toward the right hand side of the machine, which carries thebar 0 and clamp P toward the right part of the shoulder N in the lateralguide N, and with his right hand picks arivet from aconveniently-located box and drops it, point down, into the holespreviously punched. By then releasing the pressure toward the right handthe springs O 0 will draw the bar 0 against the shoulder N and bring therivet directly between the hammer J and anvil A, at which time theoperator on the treadle strikes a blow with a hammer upon the head ofthe bar J, drives it down, and upsets the rivet. The springs O 0 as theblow is struck, permit the arm 0 and goose-bill clamp l? to be carrieddown with the straps, so that these parts are not injured by the blow.As soon as the blow has been given the retracting-spring K returns thehammer to its normal position. By then attempting the withdrawal of thestraps from the goose-bill clamp l? the latter will clamp themsufficiently hard to cause the bar 0 to be drawn forward, and therebyescape the shoulder N, when it will be drawn back to its normal positionby the springs 0 ready for a repetition of the operation.

In the case of riveting straps at their ends to form hoops the operationwill be the same;

but the anvil should be convex around the hardy-hole to fit theconcavity of the hoop.

In riveting the sections together for baleties, hoops, and the like theyare frequently too long and have to be eutto the proper length. Theknife hereinbefore described is intended for this purpose and operatesas follows: The arm T is sufficiently long to permit the cutter T tocome below the portion S of the knife when the lever is in its normalposition. A space is then left between the cutter T and the blade S,into which the strap is inserted at the point desired to be out. Thetreadle is then operated to cause the lever to descend, which operationraises the cutter and severs the strap.

Where straps of different widths are to be punched the adjustable gage Bis set so that when the straps strike against it the punch willpassthrough them midway between their edges.

The treadle W is provided with cleats Y for giving a foothold to theoperator standing thereon. A brace, Y connects one of thetreadle-supports to'the frame of the punch, as shown.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is-- 1. Ina punching and riveting machine, the bar 0, provided with the goose-billclamp P at its upper end, in combination with the springs 0 O thelateralguideN, having shoulder. N, and the bed-plate A, substantially as andfor the purposes specified.

2. In a punching and riveting machine, the combination, with thebifurcated operatinglever, of the pivoted arm T, carrying at its lowerend the cutter T, the adjustable blade S, and the laterally-adjustablestop S the blade S being secured to the lower face of the casting E andthe stop to the lower face of the casting E the cutter operating betweenthem, 0

substantially as and for the purposes set forth.

3. The combination, with the operating-1ever of a punching and rivetingmachine, of the rocking treadle W, connected thereto by a rod, as shown,substantially as and for the 5 purposes specified.

4. The combination, with therocking treadle W, of the retracting-springsconnected thereto and to the supports, and the blocks provided withstop-cushions on their upper faces, 40 placed under the ends of thetreadle, substantially as and for the purpose set forth.

5. In a punching and riveting machine, the bed-plate, punch-plate, andthe pivoted punch secured to the lower end of the vertical bar I 5 andoperated by the lever 11, in combination with the slotted casting B, thevertical bar J, carrying the hammer-head J at its lower end, and thegoose-bill clamp P, springs O 0 and lateral guide N, having shoulder N,substan- 5o tially as specified.

In testimony that I claim the above I have hereunto subscribed my nameinthe presence of two witnesses.

WILLIAM A. PALMER.

IVitnesses:

Trrno. MUNGEN, JAMES J. SHEEHY.

